CD00237391 Datasheet, PDF (15/177 Pages) STMicroelectronics – ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM

STM32F20xxx
Description
2.1
Full compatibility throughout the family
The STM32F205xx and STM32F207xx constitute the STM32F20x family whose members
are fully pin-to-pin, software and feature compatible, allowing the user to try different
memory densities and peripherals for a greater degree of freedom during the development
cycle.
The STM32F205xx and STM32F207xx devices maintain a close compatibility with the
whole STM32F10xxx family. All functional pins are pin-to-pin compatible. The
STM32F205xx and STM32F207xx, however, are not drop-in replacements for the
STM32F10xxx devices: the two families do not have the same power scheme, and so their
power pins are different. Nonetheless, transition from the STM32F10xxx to the STM32F20x
family remains simple as only a few pins are impacted.
Figure 3 and Figure 1 provide compatible board designs between the STM32F20x and the
STM32F10xxx family.
Figure 1. Compatible board design between STM32F10xx and STM32F2xx
for LQFP64 package
48
49 47
64
1
V_SS
V_SS
33
32
31
17
16
V_SS
V_{SS 0 Ω resistor or soldering bridge}
present for the STM32F10xx
configuration, not present in the
STM32F2xx configuration
ai15962b
Doc ID 15818 Rev 9
15/177